package com.sxit.tdf.server.util;

import java.util.List;

/**
 * ajax请求返回Json格式数据的封装
 *
 * @author 橙子高
 * @date 2022/2/6 12:27
 * @describe
 */
public class AjaxJson {
  public static final int CODE_SUCCESS = 200; // 成功状态码
  public static final int CODE_ERROR = 500; // 错误状态码
  public static final int CODE_WARNING = 501; // 警告状态码
  public static final int CODE_NOT_JUR = 403; // 无权限状态码
  public static final int CODE_NOT_LOGIN = 401; // 未登录状态码
  public static final int CODE_INVALID_REQUEST = 400; // 无效请求状态码
  private static final long serialVersionUID = 1L; // 序列化版本号
  public int code; // 状态码
  public String msg; // 描述信息
  public Object data; // 携带对象
  public Long dataCount; // 数据总数，用于分页

  public AjaxJson(int code, String msg, Object data, Long dataCount) {
    this.code = code;
    this.msg = msg;
    this.data = data;
    this.dataCount = dataCount;
  }

  // 返回成功
  public static AjaxJson getSuccess() {
    return new AjaxJson(CODE_SUCCESS, "ok", null, null);
  }

  public static AjaxJson getSuccess(String msg) {
    return new AjaxJson(CODE_SUCCESS, msg, null, null);
  }

  public static AjaxJson getSuccess(String msg, Object data) {
    return new AjaxJson(CODE_SUCCESS, msg, data, null);
  }

  public static AjaxJson getSuccessData(Object data) {
    return new AjaxJson(CODE_SUCCESS, "ok", data, null);
  }

  // ============================  构建  ==================================

  public static AjaxJson getSuccessArray(Object... data) {
    return new AjaxJson(CODE_SUCCESS, "ok", data, null);
  }

  // 返回失败
  public static AjaxJson getError() {
    return new AjaxJson(CODE_ERROR, "error", null, null);
  }

  public static AjaxJson getError(String msg) {
    return new AjaxJson(CODE_ERROR, msg, null, null);
  }

  // 返回警告
  public static AjaxJson getWarning() {
    return new AjaxJson(CODE_ERROR, "warning", null, null);
  }

  public static AjaxJson getWarning(String msg) {
    return new AjaxJson(CODE_WARNING, msg, null, null);
  }

  // 返回未登录
  public static AjaxJson getNotLogin() {
    return new AjaxJson(CODE_NOT_LOGIN, "未登录，请登录后再次访问", null, null);
  }

  // 返回没有权限的
  public static AjaxJson getNotJur(String msg) {
    return new AjaxJson(CODE_NOT_JUR, msg, null, null);
  }

  // 返回一个自定义状态码的
  public static AjaxJson get(int code, String msg) {
    return new AjaxJson(code, msg, null, null);
  }

  // 返回分页和数据的
  public static AjaxJson getPageData(Long dataCount, Object data) {
    return new AjaxJson(CODE_SUCCESS, "ok", data, dataCount);
  }

  // 返回，根据受影响行数的(大于0=ok，小于0=error)
  public static AjaxJson getByLine(int line) {
    if (line > 0) {
      return getSuccess("ok", line);
    }
    return getError("error").setData(line);
  }

  // 返回，根据布尔值来确定最终结果的  (true=ok，false=error)
  public static AjaxJson getByBoolean(boolean b) {
    return b ? getSuccess("ok") : getError("error");
  }

  /**
   * 返回code
   *
   * @return
   */
  public int getCode() {
    return this.code;
  }

  public String getMsg() {
    return this.msg;
  }

  /** 给msg赋值，连缀风格 */
  public AjaxJson setMsg(String msg) {
    this.msg = msg;
    return this;
  }

  /** 给data赋值，连缀风格 */
  public AjaxJson setData(Object data) {
    this.data = data;
    return this;
  }

  /** 将data还原为指定类型并返回 */
  @SuppressWarnings("unchecked")
  public <T> T getData(Class<T> cs) {
    return (T) data;
  }

  /* (non-Javadoc)
   * @see java.lang.Object#toString()
   */
  @SuppressWarnings("rawtypes")
  @Override
  public String toString() {
    String data_string = null;
    if (data == null) {

    } else if (data instanceof List) {
      data_string = "List(length=" + ((List) data).size() + ")";
    } else {
      data_string = data.toString();
    }
    return "{"
        + "\"code\": "
        + this.getCode()
        + ", \"msg\": \""
        + this.getMsg()
        + "\""
        + ", \"data\": "
        + data_string
        + ", \"dataCount\": "
        + dataCount
        + "}";
  }
}
